Exception
11 months ago
EventBridgeClient.php
11 months ago
EventBridgeEndpointMiddleware.php
11 months ago
EventBridgeEndpointMiddleware.php
117 lines
| 1 | <?php |
| 2 | namespace Aws\EventBridge; |
| 3 | |
| 4 | use Aws\CommandInterface; |
| 5 | use Aws\Endpoint\EndpointProvider; |
| 6 | use Aws\Endpoint\PartitionEndpointProvider; |
| 7 | use InvalidArgumentException; |
| 8 | use Psr\Http\Message\RequestInterface; |
| 9 | |
| 10 | /** |
| 11 | * Reroutes an eventbridge request to the proper endpoint |
| 12 | * @internal |
| 13 | */ |
| 14 | class EventBridgeEndpointMiddleware |
| 15 | { |
| 16 | private $nextHandler; |
| 17 | private $region; |
| 18 | private $config; |
| 19 | private $endpointProvider; |
| 20 | private $isCustomEndpoint; |
| 21 | |
| 22 | /** |
| 23 | * Provide the URI scheme of the client sending requests. |
| 24 | * @param EndpointProvider $endpointProvider |
| 25 | * @return callable |
| 26 | */ |
| 27 | public static function wrap($region, $config, $endpointProvider, $isCustomEndpoint) |
| 28 | { |
| 29 | return function (callable $handler) use ( |
| 30 | $region, |
| 31 | $config, |
| 32 | $endpointProvider, |
| 33 | $isCustomEndpoint |
| 34 | ) { |
| 35 | return new self( |
| 36 | $handler, |
| 37 | $region, |
| 38 | $config, |
| 39 | $endpointProvider, |
| 40 | $isCustomEndpoint |
| 41 | ); |
| 42 | }; |
| 43 | } |
| 44 | |
| 45 | public function __construct( |
| 46 | callable $nextHandler, |
| 47 | $region, |
| 48 | $config, |
| 49 | $endpointProvider, |
| 50 | $isCustomEndpoint |
| 51 | ) { |
| 52 | $this->nextHandler = $nextHandler; |
| 53 | $this->region = $region; |
| 54 | $this->config = $config; |
| 55 | $this->endpointProvider = is_null($endpointProvider) |
| 56 | ? PartitionEndpointProvider::defaultProvider() |
| 57 | : $endpointProvider; |
| 58 | $this->isCustomEndpoint = $isCustomEndpoint; |
| 59 | } |
| 60 | |
| 61 | public function __invoke(CommandInterface $cmd, RequestInterface $req) { |
| 62 | $sigV4aCommands = ['PutEvents']; |
| 63 | if (in_array($cmd->getName(), $sigV4aCommands)) { |
| 64 | if (isset($cmd['EndpointId'])) { |
| 65 | $endpointID = $cmd['EndpointId']; |
| 66 | $this->validateEndpointId($endpointID); |
| 67 | if (!$this->isCustomEndpoint) { |
| 68 | $dnsSuffix = $this->endpointProvider |
| 69 | ->getPartition($this->region, 'eventbridge') |
| 70 | ->getDnsSuffix(); |
| 71 | $newUri = "{$endpointID}.endpoint.events.{$dnsSuffix}"; |
| 72 | $oldUri = $req->getUri(); |
| 73 | $req = $req->withUri($oldUri->withHost($newUri)); |
| 74 | } |
| 75 | $cmd['@context']['signature_version'] = 'v4a'; |
| 76 | } |
| 77 | } |
| 78 | $f = $this->nextHandler; |
| 79 | return $f($cmd, $req); |
| 80 | } |
| 81 | |
| 82 | protected static function isValidHostLabel($string) |
| 83 | { |
| 84 | if (empty($string) || strlen($string) > 63) { |
| 85 | return false; |
| 86 | } |
| 87 | if ($value = preg_match("/^[a-zA-Z0-9-.]+$/", $string)) { |
| 88 | return true; |
| 89 | } |
| 90 | return false; |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * @param $endpointID |
| 95 | * @param CommandInterface $cmd |
| 96 | */ |
| 97 | private function validateEndpointId($endpointID) |
| 98 | { |
| 99 | if (empty($endpointID)) { |
| 100 | throw new \InvalidArgumentException("EventId must be a non-empty string"); |
| 101 | } |
| 102 | if (!self::isValidHostLabel($endpointID)) { |
| 103 | throw new InvalidArgumentException("EventId must be a valid host"); |
| 104 | } |
| 105 | if ($this->config['use_fips_endpoint']) { |
| 106 | throw new InvalidArgumentException( |
| 107 | "EventId is currently not compatible with FIPS pseudo regions" |
| 108 | ); |
| 109 | } |
| 110 | if ($this->config['dual_stack']) { |
| 111 | throw new InvalidArgumentException( |
| 112 | "EventId is currently not compatible with dualstack" |
| 113 | ); |
| 114 | } |
| 115 | } |
| 116 | } |
| 117 |